Tap on the hammer to put it your inventory. Equip it by tapping it again. The clue is on top the elevator door. White bars shows you the order of what bells to tap. 5 bars = highest, 1 bar = lowest based on the height of the bells. Tap in this order from left to right: 2nd bell, 3rd bell, 1st bell, 5th bell, 4th bell. Elevator opens. Welcome to le...